Call-Hold-Operations {itu-t recommendation h 450 4 version1(0) call-hold-operations(0)}
  + H323-MESSAGES 
  | + MULTIMEDIA-SYSTEM-CONTROL 
  | - H235-SECURITY-MESSAGES 
  + Remote-Operations-Information-Objects {joint-iso-itu-t remote-operations(4) informationObjects(5) version1(0)}
  | - Remote-Operations-Useful-Definitions {joint-iso-itu-t remote-operations(4) useful-definitions(7) version1(0)}
  |   + Remote-Operations-Generic-ROS-PDUs {joint-iso-itu-t remote-operations(4) generic-ROS-PDUs(6) version1(0)}
  |   | -@ Remote-Operations-Information-Objects {joint-iso-itu-t remote-operations(4) informationObjects(5) version1(0)}
  |   -@ Remote-Operations-Information-Objects {joint-iso-itu-t remote-operations(4) informationObjects(5) version1(0)}
  + Manufacturer-specific-service-extension-definition {itu-t recommendation h 450 1 version1(0) msi-definition(18)}
  - H4501-General-Error-List {itu-t recommendation h 450 1 version1(0) general-error-list(1)}
    - Remote-Operations-Information-Objects {joint-iso-itu-t remote-operations(4) informationObjects(5) version1(0)}
      - Remote-Operations-Useful-Definitions {joint-iso-itu-t remote-operations(4) useful-definitions(7) version1(0)}
        + Remote-Operations-Generic-ROS-PDUs {joint-iso-itu-t remote-operations(4) generic-ROS-PDUs(6) version1(0)}
        | -@ Remote-Operations-Information-Objects {joint-iso-itu-t remote-operations(4) informationObjects(5) version1(0)}
        -@ Remote-Operations-Information-Objects {joint-iso-itu-t remote-operations(4) informationObjects(5) version1(0)}
 Addressing-Data-Elements {itu-t recommendation h 450 1 version1(0) addressing-data-elements(9)}
  - H323-MESSAGES 
    + MULTIMEDIA-SYSTEM-CONTROL 
    - H235-SECURITY-MESSAGES 
 H225-generic-parameters-definition {itu-t recommendation h 450 1 version1(0) h225-generic-parameters(6)}